it's still unclear whether gabrielle giffords will attend. but we understand there will be a surprise guest today. he's not identifying who that is. >> that should be interesting. susan mcginnis in washington, thanks. >> another high-profile issue for congress is immigration reform. president obama speaking in nevada yad said now's the time. warned if congress doesn't act he will. danielle nottingham reports. >> reporter: president obama told students at the predominantly hispanic high school in las vegas he's keeping his campaign promise to reform immigration. >> we need congress to act on a comprehensive approach that finally deals with the 11 million undocumented immigrants who are in the country right now. >> reporter: the president supports the plan that the so-called gang of eight unveiled on monday. it would allow illegal immigrants to gain temporary legal status if they passed a background check, paid a fine, back taxes and learned english. >> for the first time in many years, republicans and democrats seem ready to tackle this proble